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Cross References: BS 1134-1*BS EN 1561:1997*BS 3643-1:1981 *BS 3643-2:1981*BS 1133-6.2*BS 1133-19*
 

Document History

  1. BS 939:2007


    Engineers' squares (including cylindrical and block squares). Specification

    • Most Recent
  2. BS 07/30163789 DC

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    BS 939. Engineers' squares (including cylindrical and block squares). Specification

    • Historical Version
  3. BS 939:1977


    Specification for engineers' squares (including cylindrical and block squares)

    • Historical Version